Abstract
Electro Discharge Machine (EDM) is one of the non-conventional machines utilized to cut hard material and complex contours that are difficult to achieve by other conventional techniques. The material is removed by spark generated between the tool and work gap, which melts and vaporizes the material and is then flushed along the flow of dielectric. It has been extensively used in various industries, for improved efficiency and productivity. The present research tends to review the diverse work executed by researchers on various performance measures of EDM. The utmost considered performance measures are material removal rate, tool wear rate, surface roughness, radial overcut, residual stress, white layer thickness and black layer that are reviewed in this paper. The paper also elaborates future trends for research on EDM.
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